TRT_Hit_p1 Node1 TRT_Hit_p1 + hitID + particleEncoding + kineticEnergy + energyDeposit + preStepX + preStepY + preStepZ + postStepX + postStepY + postStepZ + globalTime Node2 HepMcParticleLink_p1 # m_mcEvtIndex + HepMcParticleLink_p1() + HepMcParticleLink_p1() Node2->Node1 +m_partLink Node3 long Node3->Node2 #m_barcode